Draft-rigging attachment for cars.



PATENTED SEPT 18, 1906.

A. CAMPBELL. DRAFT BIGGING ATTACHMENT FOR CARS.

APPLICATION FILED APR1$.1 906.

2 SHEETS-SHEET 1 A r IA/76515365.

No. 881,212. 7 PATENTED SEPT 18, 19,06.

A. CAMPBELL.

DRAFT RIGGING ATTACHMENT FOR CARS.

APPLICATION FILED APR.13.1906.

2 SHEETS-SHEET 2".-

for Cars of which the following is a specificaplates, the radii which ARGYLETCIAMPFBELL, oFoHIoAeo, ILLINOIS.

onnFT-meeme A I Application Specification of Letters Patent.

TFTIACHMENT FOR CARS-- Patented. Sept. 18, 1906.

filed April 13,1906. Serial Ni 311,550.

To all wnom iii-may concern; v

Be 'it known'thatl, ARGYLE CAMPBEL a .citizen ofthe United States, residing at Chicago, in thecounty of Cook and State-of Illinois,

have'invented a certain new and useful Improvement in Draft-Rigging Attachments tion. v

My invention relates to-draft-rigging attachmentsfor-cars; and its obj ect'is'to providemechanism by ean of which thedrawbar or coupler-shank ofa car mayjbe turned efcar goes e Plu es derable a siti tertingthe onfthe spring ar accomplishing the oient readilyf ableto. nit-trader.

-:; 5 More particularly. cons sts 1n providing a pivot a1 point around a1; le without changscribed not supplied with my 1nvent1on'there g on ofthefoliowepplates the draw-bar22, tending direction P... et e ontr'olling'thecoupler;

' tsi nmechanism capaabove obj ects which can'b'e easiland cheaply madej'and installed, e f 'era'tion, and -i's not f i ifdiewtb li; j m the springs, while allowingsaid bar longitudinal mot onwi thj referencet'o the 'piy ot its the springs act, this incombination with curved bearing/connections between the coupler-yoke and the ordinary of said bearin ordinary follower- 5 being in the center of said pivotal 'point,jw ereby during theipassage bf the car "around a curve the yoke moves along said curved surfaces on the follower-plates without moving the bearing upon the springs.

no out of My i ention f mher cons-sea details of construction which'will be hereinafter more fully described and claimed asthe specification proceeds.

Referring'to ,the-drawings',Figure 1 i's'a.

plan and Flg. 2 is a vertical central sectional detail viewlof the device of my invention 1n its preferr d form. Fig. 3 is a plan and Fig. 4 an'end'view of one modified form of construction pf my invention; Fig.5 is a m'odlfied iormof construction of the device of Fig. 4. Figs. 6 and 7 are 'plan'viewsoftwo other modi edfo'rms of my-invention.

Again referring to the drawings, numerals 10 andll indicate the any'car. The center sill while the center sill 11 is notched at ceive the two follower-plates 14 an tween which are springs 16 and 17.

parallel cent er sills of 10i's-notched'at 12,

13, to red 15, be- Inclos- E is a *sidepull upon 0 rock it laterally over against one. of instanoe sill 10-thisactiori causes the opposite end23 .of the yoke to swing over against stroys the sooner or selvesf Ifin the preferred" form of construction ofing these follower-plates 14 and 15 andthe sp'rings'16 and 17 is a draw-bar yoke 20, con-f nected by bolts or rivets 21 to "the draw-bar or coupler-shank 22','havingintegral with it at the right, beyond the figure, the coupler" proper. Th s yoke here shown is-only one of several types'ofyoke well known in the art,

and its particular as shown in Figs. 3', 6,

Figs. 1 and 2, being entirely omitted. When now inia draft-rigging oi the class just deof the car or to draw it the center sills,a's, for- 1 the center sill 11, thereby shifting the bear- :ing points of the yoke on the follower-plates 14 and 15 from their centers in the center line of the car to points at one side ofthe center.- As pushing or pulling force is now exerted on the draw-bar yoke it throws them out of their normal positions, gles' to the center sills of the car and to the central axis of the car, on which the springs ,lfi 'a'nd 17 are mounted and should normally act-i 3 Such tilting of the follower-plates deefficiency of the springs and later injures the springs them- In order to overcome this diificulty;

Figs. l'l-and' 2, mount upon the end 23 of the therewith, atailpiece 25, having out in it a slot 26, elongated in'the center line pf pull or xthe' draw-bar, containing a vertical pin or bolt 27'jri id1y' mountedin a support 28, secured,-

form is'no part of my 'inveritio'n. In the ordinary type of this coupler the draw-bar yoke ends,

and 7, onthe line AA of Figs. 1 and 2, the parts at theleft of that-line, as seen in said shown at right an draw-bar yoke, preferably casting it integral any suitable means,between these center b sills 101 and 11 and at the rear of the draftrig'ging, as shown. This pin 27 should be so located that it is in the'middle of slot 26 when the parts are in the normal position of Fig. 1,

the car, acting uponthe coupler: The slot 26 pull the car, thereby drawing the follower- 1 i with no strain, tending to either push or pull 2- plate 14 toward the plate 15 and compressing the springs 16 and 17, the draw-baryoke may move with reference to the pin 27 a distance e ual to the compression limit of the springs;

-T e slotshould also be of sucha-length that IIO when a pushing force is exerted against the coupler, and thus forces follower-plate toward follower-plate 1 4, the yoke maymove the same distance as before in the opposite direc- 5 tion. In order that this rotation of the yoke about the pin 27 may not disturb the follower plates, I cut in the rear face of the rear follower-plate a curved bearing 80, struck on an are having the pin 27 as a center, and corre- 1o spondingly curve the inner face of the rear Similarly 1' about the pin 27 as a center the drawbar yoke will swing upon the curved bearing surfaces 30 and 32 of the respective follower I the'device of F ig. '4, which consists merely in continuing the j aws 87 and 38- across, over, and under the plates from the position of Fig. 1 to the new inc ined position without moving the fol- 25 lower-plates out of their normal positions perpendicular to the center sills 10 and 11, from which it will be seen that while the push or pull on the draw-bar 22 may be at a distinct angle with reference to the central li'ne go of the car the component force of the pulling force along the draw-bar, tending to cause motion'of one of the two follower-plates 14 or 15, will be in the center line of the car, and therefore the springs remain in their normal 3, 5 position in the center line of the car and act perpendicular to the faces of the followerplates. H In Figs. 3, 4, and 5 I have shown a modified way of making the pivot-point or bearing for the rotation of the draw-bar yoke and have changed its location from that of Figs. 1 and 2. In the construction of Figs. 3 and 4 I simply secure to the center sills 10 and 11 two guiding-clips 35 and 36, having jaws 37 and 38 loosely inclosing the upper bar of-thc draw-bar clip. The inner vertical surfaces of these clips are curved in the lines 41 and 42, referably drawn on such radii on points so l ocated at the sides of the coupler that as the draw-bar swings between the corners 46 and '47 of the center sills the sides of the draw-bar yoke top will always be tangent to these arcs 41 and 42, the result being that as'the drawbar is rocked it tilts about a center 48 midway between the curved surfaces 41 and 42, located in the center line B B. The curved surfaces 41 and 42 should be near. enough to the edges 49 and 50 of the upper plate of the draw-bar yoke to produce t is center forrotation, as described, and yet should be far enough apart so that the draw-bar yoke may move backward and forward durin the pushing or pulliug'action on 'the coupler, as has been heretofore described in connection with the preferred form. -With the point 48 as a 'fol ower-plate 15.-

center I strike the time '51 and 52 and form thereon curved surfaces for the outer faces of the foliower=plates i4 and 15, forming corresponding curved faces on the interior rear walls of the draw-bar yoke and draw-bar. 7A The result of this construction is that as the shank of the coupler is rockc'd about the center 48 the faces of the yoke slide upon the curved bearing-faces 51 and 52, heretofore described, with the result that the springs Hand 7 5 1 7 act normally in the central plane cf the car, regardless of the angleof the shank of the coup ler, e xact ly asin the preferred form of Figs.: 1 and 2'. it/will be noted that there is no difference in the operation of the bearing about pin 27 of the preferred form and the bearing about center 48 between curves 41 and 42' of the-structure just described; One may be described as an internal; bearing,v whil c the other is an external bearing but their func tions are identical.-

in Fig. 5 I have shown a modification cf upper plate ofthe draw -bar yoke.- It will be seent hat this change in constructiondoes not change the operation of the device illustrated in Fig. I g

In Fig- 6 I have illustrated a third modified form of the device of Figs. 1 and 2, in which 5 instead of placing the pivot pin for the draw bar upon support 27 at the rear of the draft= rig ing I use a pin 55, located upon the front This pin is in an elon= gated slot 56,- cut in the draw-bar yoke, I00 which slot performs exactly the same func= tions as the slot 26,heretofore described." As in the previously-described constructions, 1 use this pin55 as a center to strike the arcs of the curved bearings 57 and 58 and the bear= r05 ing-sur aces on the draw-bar yoke and draw bar upon the follower-plates 14 and 15" v In Fig. 7 I have shown a fourth modified form of construction, which is simply a reversal of the construction of ig. 6, the r 10 pivotal center pin 60 being located on the rear follower-plate 15; said in fitting in'an elongated slot 61 in the top p ate of the drawbar yoke, the arcs 6-2 and 68 and the respective bearing-surfaces of thefollower-plates I15 I 14 and 15 being struck about this pinGO as a center.- It will be noted that in the last two modified forms of' construction the pivot-pin.

moves with the follower-plate on which it is located; but as this movement is slight there is no real modification in the o eration of the device. As a result of this only have to make the slots 56 and 61 one hali as long as slot 26. g Q I2 5 Having thus described my invention, what I claim asnew, and desire to secure by Let= ters Patent, is- V g 1. In mechanism of the class described, a

frame, draft mechanism therein; a pin-and 13o when the draw-bar is. moved laterally of the slot connection between the draft mecham andframe adapted to center, the draft i :9 dra -b. ar rocks mechanism while dinal movement, as described.

late, a draw bar having a yoke follower-plate. and spring pin-- and-slot mechanism adjacent. -tothe yoke forming a'pivotal bearing about which the the coupler is moved laterally of the car, this while permitting lo 'tudinal movenient of the draw-bar with re 3. Ina car in combination with a frame, a

follower-plate adapted to movably engage the frame, a spring normall pressing against said followerlate, adrawar havinga yoke engaging sai follower-plate and spring, pmand-slot. mechanismadjacent to the yoke forming a pivotal bearing about which the draw-bar rocks in. a horizontal plane when the coupleris moved laterally of the car, this I while permitting lon the draw-bar with re tudin'al movement of erence to said bearing,

v and a curved bearing connection between'the' twofollower-plates adapted to age'ytheyframe, a spn'ngbetween said folower plates,- a draw-bar'havin .35

. formed on the follower-plate and theyoke or draw-bar pivotal bearing as a center.

' LEEIna'car, the combination witha frame, movably .en-.

a, yoke en:-

said follower-plates an spring, p1nand ls lot mechan sm adjacent'to the yoke forming a1pivotal bearing about which the coupler-shank rocks in a -horizontal plane. when the draw-bar is moved laterally of the car, this while permitting longitudinal movement of the bar with reference to the pivotal bearing.

engage'the frame, a'spring between sai fo1- lower-plates, adraw-bar having a 'yoke enand-slot 'mechanism adjacent to the yoke forming a pivotal hearing. about whichthe coupler-shank rocks in a. ..l1'orizontal plane car, this while permitting longitudinal movement of the bar with reference to the pivotal bearing, and curved bearing connections between each follower-plate and the yoke formed on arcs' or circles struck from the piv- 1 center sills, a movable follower-plate s otal bearing as centers.

6. Ina car, in combination with a air of iidable backward 'andforward between the center sills, a spring normally pressing said 'followerplate, a draw-bar having a yoke engaging mechanism a I said follower-(plate and s ring, pin-andeslet pivotal bearing in. the central longitudinal permitting slight longltu-fi in a horizontal plane whenerence to said hearing,

are of a circle struck from the a carlin combination with a frame, .two follower-plates adapted to movabl acent to t e yoke forming a.

tween the followerlate' and the yoke,-

formed-p11 'the 'arc '0 a circle struck from the'pivotal bearing as a center. w q

7. In a car, in combination with aair. of center sills, a air of follower-plates's idable backward an forward between the center sills, a spring between said follower-plates, a

draw-bar havin a yoke engaging said fols ring, pin-and-slot mechlower-plates an I eyoke formin a ivotal v anism adjacent to t bearing inthe central lon itudina p k the draw-bar about which t iin a horizontal lane when the bar is moved laterally of the car,,this while permitting longitudinal motion of the bar with reference to f the pivotal bearing, and curved bearing con- -nections;betweeneach-follower plate and the -yoke,-th e same being formed on arcs of cir- -t'ers.,

8. Ina car, in combination'with a frame, a follower-plate adapted to movably engage said follower-plate, adrawar having ayoke and-slot mechanism'on' the end 0 the .yoke ,away' from the draw-bar forming a pivotal lbearing about which the draw-bar roc s in a horizontal plane when the coupler. is moved a laterally of the car, this while permitting longitudinal movement of the draw-bar with .reference to said bearing, and a curved bear-- .ing connection between the follower-plate "and the of a;circle struck from the pivotal bearing as a center.

two follower-plates adapted to movably enagethe 'i'rame, a springbetween said folower-plates, a draw-bar having a yoke engaging saidfollower-plates and spring, pin' 1 a bearing connections between each followerplate and 'heyoke formed on .arcs of circles struck from the pivotal bearing as centers.

10. In a car, in combination with a pair of center. sills, a movable follower-plate slidable' backward and forward between the center sills, a spring normally pressing said followerplate, a draw-bar having a yoke engaging said follower-plate and spring, pin-.and-slot from the draw-bar forming a central pivotal cles struck from the pivotal hearing as cenyoke or draw-barformed on the are-- 9; In a car, in' combination with a frame,

hearing; and a curved bearing connection be- I ane of e draw-bar rocks Z the frame, a springnormall pressing agalnst engaging said follower-plate and s ring, p1n-.

ting longitudinal movement of the bar with reference to the pivotal bearing and curved mechanism on the. end of the yoke away anism'on the end of theyoke away'from-t'lie a folloWer-plateadapted to mova'bly engage 'lower' pla'teandispring; a tailpieceupon: said the car, said slot and pin) being" so properhearing about which the-draW-bar rocks inl a horizontal plane When the-coupleris moved laterally ofl the can; this While-permitting longitudinal'movement of the draw banwith reference 1 to the pivottbeari ng, and a curved bearing connection between the follower plate and. the yoke; formed on the arc of a circle struck from the pivotal bearing'asa center. v

11. In ascar, inzcombination With=as air of center'si]1s,.a pair-Iof fbllowenplatess idable backward. and: forward: between the center sills,- a: spring between said: follower plates, a: draw-bar havinga yoke engaging said fell lowereplates andi spring; pin-and slot mach draw bar fomnin a central pivotal bearingabout Whiohthe raw bar rocks in-a-horizontalplane when. the bar is-movedlaterally of: thecan; this Whilepemnitting'longitmdinall E motion of the bar with. reference" to 1 the pi v otal :bearing, and curved bearing connections between each followereplateand t he'yoke, the same being" formed on arcs of circles s-truckt from the pivot/ah hearing' as centers;

12. In a car, in combination With a frame,

the: fram'e;.a1springnomnall-ly lprsessing' said follower plate into its nor-ma position, a draw-bar having" a: yoke engaging said: foll yoke, extendin awayf'rom: the draw-ban; I there being'anelongat'edi slot in said-tailpiece lyingrnormalliy inrthe'central line-of pull ofi j the draw-bar; a stationary pivot-pin enter? ing'said'sloti, adapt'edtoactl as ascent'en about I plane when the couplenismoved laterally of tioned as-to .penmiti mov e nent oft thedraw-'- bar Withereferenoe to" the pin, and a curved plate and the-yoke; the same being formed on the arc of acircle struck from the'pi ot-pin as a center;

13 I'n-aicamin combinationwith aframc; l two follower-plates mov ably' engagin the 3 frame springs between said? folloW erep lates; a coupler-shank having a yokeengagingt said follower-plates and springs an: extension tailpiece on: the endi of the yoke away froma the draw ban; there being in said tailpiece an\ elongated sl'ot lying'in-substantially'thecemt'er line of the draw bar and a stationary estate pivot pin enteringsaidi slbtf, ,the sameacting; as a center about wHichthedraW-barrooks in a horizontal plane. when the barismoved laterally of the car, saidipin and slot'being so proportioned that longitudinal movement'of the draw-bar i spermitt'ed with referenceto said pin, and curved bearinggconnections h etween each followen plate and the yoke; the

same-being formed oni amsof cimles st/ruclt a yoke en aginggsaid f'olloWen-plates'- an springsan "apivot pin entering 'anelongated slot: in. a: part movable with thedraw-ban;

j said pin and slot' being smpropontioned that i the pin aots as-a-oenten about whichthe'dmw barracks-in a-horizontaliplanewhemthe-ban is moveddaterally 0t the-car; thiswhilpermitt-ing aliinited lbngit-udinal movemenfiof the draw-ban With ref'erence' to tliB'PZlIIL 1"5. In'a:car; in combination wibli a: air'of plates, as described; a pair of: follower plates slidable backward and forward in said? notches in: the center sill; a spring-between said followersplat'es normally pressin 1 them i11 opposite directions; a.' dI&W'-b8l "avin a. yoke engaging" said follbwer plates an 1 springs, a pivot-pin: entering an: elongatedi saidpin and slot being so proportioned that the pinz acts as a center" about which the the ban is moved laterally of the can; this n p while permitting.aslimited lbngitudinahmovsbearing connection between the follower j ment of the draw-bar with referenc e'to the pin, and curved bearing connectionsbetween I I each follower-plate and the yoke formed on I arcs of: circles struck about the 'pi vot pi'n assa:

center: n p

In witness whereof I have hereunto 'iiib'e slot in: a part: movable: with: the drawbar o lfdraweban rocks in a horizontal planewhen' scribedmyname initlie presence of two Wit-1 nesses; I v g c ARGYLEJe MrBELn;

Witne'sseszr DWIGHT B; GHEEVER, GLARA- J; GHRIsTorFEm 

